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The Iowa Pleistocene snail was thought to be extinct until it was discovered in 1955 by a scientist working in northeastern Iowa. It was listed as endangered by the United States in 1978. The main cause of the snail's decline is climate change, as it is restricted to patches of cold habitat in warmer surroundings. The snail is considered to be ...
Oʻahu tree snails: Achatinella spp. Hawaii: E Painted snake-coiled forest snail: Anguispira picta: Tennessee: T Iowa Pleistocene snail: Discus macclintocki: Illinois, Iowa: E Morro Shoulderband snail: Helminthoglypta walkeriana: California: E Magazine Mountain shagreen: Mesodon magazinensis: Arkansas: T Chittenango ovate amber snail ...
Discus macclintocki F. C. Baker, 1928 – Iowa pleistocene snail, Pleistocene disc [5] Discus nigrimontanus Pilsbry, 1924 – Black Mountain disc [5] Discus patulus (G. P. Deshayes, 1830) – domed disc [5] Discus selenitoides (Pilsbry, 1890) – file disc [5] Discus shimekii (Pilsbry, 1890) – striate disc [5] Species brought into synonymy [6]
The refuge was established in 1989 to help the recovery of two federally listed species: the endangered Iowa Pleistocene Snail and threatened plant Northern Wild Monkshood. Although the refuge was established to protect the snail and flower, an entire rare community of plants and animals is preserved on these sites.
Calcrete paleosol from San Salvador Island’s bedrock. This Late Pleistocene calcrete has three fossil Cerion land snail shells, along with a fossil Tectarius snail shell, in cemented lime sand. Calcretes are lithified soil horizons, and are composed of calcium carbonate (CaCO3).
Iowa Pleistocene snail Northern monkshood. The Driftless Area contains more than half of the world's algific talus slopes, a type of small, isolated ecosystem. [28] These refugia create cool summer and fall microclimates that host species usually found further north.
Vertigo arthuri is a species of land snail in the family Vertiginidae, the whorl snails. It is known by the common names callused Vertigo, [3] or Midwest Pleistocene Vertigo. [4] It is native to North America. [2] Michigan [5] Wisconsin [4]
The Iowa Pleistocene Snail was believed extinct until it was discovered on algific talus slopes in northeast Iowa in 1955. Placed on the Endangered Species List in 1977, Congress created the Driftless Area National Wildlife Refuge in 1989 to protect this species, as well as other threatened and relict species. [ 7 ]